1 Chronicles 10:8-13

8The next day, when the Philistines came to strip the dead, they found Saul and his sons fallen on Mount Gilboa. 9They stripped Saul, cut off his head, took his armor, and sent messengers throughout the land of the Philistines to proclaim the news in the temple of their idols and among their people. 10They put his armor in the temple of their gods and hung his head in the temple of Dagon.

11When all the people of Jabesh-gilead heard about everything the Philistines had done to Saul, 12all their men of valor set out and retrieved the bodies of Saul and his sons and brought them to Jabesh. And they buried their bones under the oak1 in Jabesh and fasted seven days.

13So Saul died for his unfaithfulness to the LORD, because he did not keep the word of the LORD and even consulted a medium for guidance,